Boiler.



PATENTED D5014, 1907.

W. J. OGAN.

BOILER.

APPLIOATION FILED FEB. 21. 1907.

' 2 SHEETS-SHEET 2.

Elwin;

THE "cams PETERS co WASHINGTON, n cy UNITED sTATEs ienaunni OFFICE.

WILLIAM rI. OGAN, OF DAYTON, OHIO, ASSIGNOR TO OGAN MECHANICAL APPLIANCE 00., OF

. DAYTON, OHIO, A FIRM.

BOILER.

To all whom it may concern:

Be it known that I, WILLIAM J. OGAN, a citizen of the United States, residing at Dayton, in the county of Montgomery and .State of Ohio, have invented certain new and usel ful Improvements in Boilers; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, referl ence being had to the accompanying drawl ings, and to the letters and figures of referl ence marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in boilers and has specific ref erence to the boilers of locomotives and to the boilers known as Scotch marine boilers.

The objects of the invention are to provide means for water circulation in boilers of these so'that they are easy of access. Other advantages incidental to obtained.

In the annexed drawingsFigure 1, is a longitudinal side elevation of a locomotive type of boiler partly in section. Fig. 2, is a cross section on the line 20-93 of Fig. 1. Fig. 3, is a cross section on the line 'yy of Fig. 1. Fig. 4, is a longitudinal side elevation of a Scotch marine type of boiler partly in secl tion, and on the line o-o of Fig. 5. Fig. 5, is a cross section on the line e'i of Fig. 4. l

In a detail description of the invention,

the foregoing are also types, and to arrange the fire and water tubes l similar reference characters indicate correspending parts.

Referring to Sheet 1 of the drawings, 1 designates the outer shell of a locomotive boiler having at its rearward end a fire box 2(partl y broken away) and at its forward end a smoke box 3. Extending through the boiler is a fire tube formed of upper and lower curved plates 4 and 5 which are riveted together at 21. These plates 4 and 5 are suitably curved to secure a large cross section and to conform to the shape ofthe boiler in which the tube formed therefrom is located. Distributed throughout this fire tube so formed of the members 4 and 5,, is a multiplicity of water tubes 6 having appropriate curvature; the upper ends of these water tubes are expanded in the usual manner in the upper plate or member 4 of the fire tube, and the lower ends of said tubes are likewise Specification of Letters Patent. Application filed February 21,190'7- Serial No. 358,619,

evaporates.

Patented Dec. 24, 1907.

{secured in the lower plate or member 5.

These water tubes 6 thus located and secured are placed in a staggered position in order to more elfectuallybreak up the currents of hot gases as they pass through the fire tube, and to thereby obtain a maximum amount of heat from the same in contact with said wa ter tubes.

The rear end of the fire tube 4 and 5 is supported by an end plate 7 to which it is secured by the usual rivets, said end plate being similarly secured to the wall of the fire box 2. The forward end of said fire tube is bell-shaped as at 8 and is supported by being riveted in the end plate 9, said end plate be ing similarly secured to the boiler shell 1. It will be readily seen that in case it is necessary to remove the fire tube from the boiler, the same may be easily detached at the forward end, the orifice in the end plate 9 being larger than the body of said fire tube.

As is clearly shown in Fig. 3, the fire tube is placed below the water line thus allowing for circulation. The water passes down be tween the boiler shell 1 and the side seams 21 of the fire tube and under said fire tube as shown; the water thence passes up through the water tubes 6, the latter being heated by the products of combustion passing through the fire tube as hereinbefore described. The water then passes to the upper side where it In Fig. 2, I have shown the usual water leg 10 surrounding the fire box, but forming no part of the present invention.

In Fig. 4, l1 designates the outer shell of a Scotch marine type of boiler; in the lower part of said shell there are two corrugated fire boxes 12 shown.) In the upper portion of the shell are two parallel fire tubes constructed of parts 4 and 5 and similar to the fire tube shown in Fig. 1. The rearends of the fire tubes are supported in the end plate 13, while the forward ends are supported in the end plate 14. The hot gases or products of combustion from the fire box are conducted provided with grates (not 19; these plates 19 are secured to the shell or shells by bolts 20. hen it is desired to remove one of the tubes 6, the necessary plate 19 is removed, the selected tube 6 is unl'astened from the fire tube and may then be withdrawn and removed and another tube inserted in its place. It will be seen that by this means, I secure the same results as in a sectional Water tube boiler, in that it is only necessary to remove the damaged tube to make repairs.

I claim:

1. In a boiler, a shell having a series of openings throughout its length closed by removable plates, one end of said shell having a smoke box thereat and the other end having a fire box therein, a fire tube formed of upper and lower curved plates and substan tially oval in cross section, one end of said tire tube terminating in a bell-shape, an end plate Within the shell and to which. said bell end of the fire tube is connected, the other end of the fire tube being connected to the fire box within said shell, and a series of Water tubes mounted in the fire tube transversely l l l of the length thereof, substantially as specified.

2. In a boiler, a shell, a fire tube formed of upper and lower curved plates within said shell, one end of said fire tube terminating in bell-shape, means for supporting said bell end Within the shell, a fire box to which the other end of the fire tube is connected, and a series of water tubes extending across the fire tube throughout its length, substamially as described.

3. In a boiler, a shell, a fire tube formed ol upper and lower curved plates, one end of said fire tube terminating in a bell, water tubes ext ending from the upper to the lower plates across the interior or the fire tube, and end plates supporting said [ire tube uithm the shell.

In testimony whereof I alhx my s1gn at ure, in presence of two Witnesses.

VILLIAM J. ()GAN.

itnesses R. J. MGOARTY, 0. M. THEOBALD. 

